This makes most sense. If they release it now market price would likely drop as people will cry foul with them releasing even more expensive trims further away from the base 35k version. Announcing after market will give people time to process and won't affect stock price much and may even show bump up on Monday with Tesla being able to introduce new options and having healthy production numbers.
Exactly, any effect on the stock should have been seen when they made the initial announcement not when they follow through on it. In my opinion they'll open it up tomorrow evening (PST).Elon already said they will take orders at the end of this week. Following through with that shouldn't negatively affect the stock price.